Mineral And Metamorphic Rock

Tumbled quartz (likely smoky or iron-stained quartz)

Quartz, silicon dioxide (SiO₂)

Milky quartz-bearing rock, possibly quartzite

Quartz (SiO₂), likely in a quartzite or quartz-rich vein

Milky quartz

Quartz (silicon dioxide, SiO₂)

Raw dark metamorphic rock, likely schist or slate

Mica schist or phyllite; commonly quartz–mica–chlorite aggregate

Mica-rich metamorphic rock, likely schist

Muscovite–biotite schist, possibly with quartz and feldspar

Pyrite

Iron Sulfide (FeS2)

Quartz (Iron-stained Quartz)

Silicon Dioxide (SiO2)

Serpentinite

Serpentinite (composed primarily of Serpentine group minerals (Mg,Fe,Ni,Al,Zn,Mn)2-3(Si,Al,Fe)2O5(OH)4)

Garnet (Almandine/Pyrope series)

Garnet Group - X3Y2(SiO4)3

Milky quartz-rich rock

Quartz, crystalline silica (SiO₂), likely massive milky quartz with minor feldspar or mica

Garnet (likely Almandine or Pyrope)

Garnet (Group Name), Fe3Al2(SiO4)3 or Mg3Al2(SiO4)3

Quartz (Milky/Crystalline)

Silicon Dioxide (SiO2)

Greenish rough stone, possibly serpentine or soapstone

Indeterminate from the image; possible serpentinite (serpentine-group minerals) or talc-rich soapstone

Schist or Gneiss pebble

Metamorphic rock (Schist/Gneiss)

Gray foliated metamorphic rock, likely gneiss or schist

Quartz–feldspar–mica metamorphic rock; exact identification requires a fresh surface and testing

Emerald (or possibly Green Glass / Slag)

Beryl (Be3Al2(SiO3)6)

Gneiss

Gneissic Metamorphic Rock

Blue Kyanite

Kyanite (Al2SiO5)

Weathered iron-rich rock, possibly banded iron formation

Hematite–goethite-rich ironstone; possible BIF (Fe₂O₃/FeO(OH) with quartz)

Unidentified small mineral fragments

Likely quartz- or feldspar-rich material; species cannot be determined reliably from the image

Slate

Slate (Metamorphic Rock)

Milky quartz (rough crystal)

Quartz, silicon dioxide (SiO₂)

Tumbled quartz crystal

Quartz (silicon dioxide, SiO₂)

Polished dark stone, possibly black tourmaline or a dark pebble

Undetermined; image lacks detail for reliable identification

Rounded quartz-veined pebble

Likely quartz-veined metamorphic rock; exact host rock is indeterminate from the image

Milky quartz with iron-oxide staining

Quartz (SiO₂), likely ferruginous milky quartz

Green Quartz (Prasiolite/Adventurine)

Silicon Dioxide with inclusions (SiO2)

Milky quartz

Quartz (silicon dioxide, SiO₂)

Quartzite with Epidote/Chlorite Inclusion

Metamorphic Quartzite (SiO2 with accessory silicate minerals)

Milky quartz (massive quartz)

Quartz, silicon dioxide (SiO₂)

Banded Gneiss

Gneiss (high-grade metamorphic silicate rock)

Black Slate

Slate (Metamorphic Rock)

Lapis Lazuli

Lazurite-rich metamorphic rock

Milky quartz

Quartz (SiO₂)

Slate with Quartz Vein

Foliated Metamorphic Rock (Mainly Quartz, Muscovite, Chlorite)

Biotite Schist

Metamorphic Rock (Schist)

Milky quartz-rich rock

Quartz, SiO₂; possibly quartzite or massive vein quartz

Quartzite with inclusions

Metamorphic Rock (Mainly SiO2)

Banded Gneiss

Gneiss (Metamorphic rock)

Banded gneiss (likely garnet-biotite or quartz-feldspar gneiss)

Gneiss; predominantly quartz (SiO₂), feldspar, and dark biotite/amphibole

Banded Gneiss with Quartz Vein

Foliated Metamorphic Rock (Gneiss)

Banded metamorphic rock, likely gneiss or metasedimentary slate

Quartz–feldspar–mica gneiss (tentative), possibly containing iron-oxide veins